<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>default style</title>
</head>
<body>
    <div>DIV元素</div>
    <p><span>内联元素</span><em>内联元素</em><strong>好巧，我也是内联元素</strong></p>
    <p>
        <select>
            <option>下拉框</option>
            <option>下拉框2</option>
            <option>下拉框3</option>
        </select>
        <span>你猜左边是什么元素</span>
    </p>
    <p><a href=""><div>111111</div></a></p>
    <p><p>222222222</p></p>

<div>
    <h1>11111</h1>
    <p>pppp</p>
</div>

    <p>
        <div>divdiv</div>
    </p>

<h2>
    <div>333</div>
</h2>
</body>
</html>